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. 1990 Oct;172:17–24.

The innervation of the adrenal gland. IV. The source of pre- and postganglionic nerve fibres to the guinea-pig adrenal gland.

T L Parker 1, A A Mohamed 1, R E Coupland 1
PMCID: PMC1257199  PMID: 1703141

Abstract

The pre- and postganglionic sympathetic innervation of the guinea-pig adrenal medulla was investigated using the retrograde neuronal tracers Fast Blue and WGA-HRP. Labelled preganglionic cell bodies were located in the intermediolateral horn of spinal segments T3-L2, the majority (73.9%) were found between T6-T12 representing 70.2% of the total number of labelled cells; the segment T10 contained the largest number of labelled neurons. Labelled postganglionic cell bodies were found in the paravertebral ganglia between vertebral levels T3-T12 (representing 22.6% of the total labelled neurons), the maximum number was found at T10. In addition, labelled neurons were found in the suprarenal ganglion (representing 7.2%). No labelled cells were found in the coeliac ganglia. The labelled neurons were found ipsilateral to the site of injection into the left adrenal gland. It is concluded that the guinea-pig adrenal gland receives both a pre- and a significant postganglionic sympathetic innervation. The destination of these nerve fibres within the adrenal gland has yet to be determined.

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Selected References

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